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1.
An unwanted person listening in to and jumping in on your conversation
Person #1- "So hey what are you doing this weekend?"
Person #2- "Probably grab a couple a beers and watch the game."

Unwanted Person#3 (listening over your shoulder)- "Sounds fun what time are we gonna meet up?"

Persons #1 and 2 say "stop the grimmering man."
by Mark Stone February 15, 2008
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